Sysex stands for “system exclusive”, and it is the format that was used by many synths to store the information of the synthesizer. You can store patches, settings and banks using sysex data. If you’ve ever wondered how to transfer sysex patches to your vintage synth using a modern computer, there’s plenty of commercial programs out there that can do this with, but you can also do it for free with a program called MidiOX.
In this older YouTube video of mine, I go over the process of doing this with my vintage K1 synth. The same technique can be used with nearly any synth that works with sysex data. All you need is a windows or linux computer, and a midi interface like this one or something similar and you can create your own library of patches on your computer for your vintage midi synths.
What is great about this is you can download thousands of patches online and easily transfer them to your synth achieving maximum fun.